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PSDCB161220E
GREEN POWER CCTV
3
1. Technical description.
1.1 General description.
A buffer PSU is intended for an uninterrupted supply to devices requiring stabilised voltage of
12V DC (+/-15%).
The PSU provides voltage of
U=13,8V DC.
Current efficiency:
1. Output current 16x1,1A + 2A battery charge
*
2. Output current 16x1A + 4A battery charge
*
3. Output current 16x0,75A + 8A battery charge
*
Total device c battery: 20A max
*
.
In case of power decay 230V, a battery back-up is activated immediately.
The approximate backup time is given assuming that all output ports are used (using typical devices and 65Ah
batteria). The electricity consumption for own needs and the energy efficiency of the power intake track were taken into
account. The exact description of how to perform the calculations can be found at:
The PSU is constructed based on the switch mode PSU, with high energy efficiency. The PSU is housed in a
metal enclosure (colour RAL 9003) which can accommodate a 65Ah/12V battery.
A micro switch indicates door opening (front cover).
The power supply housing has space for additional modules (fuse blocks, voltage regulators and DC-DC converters).
Optional power supply configurations are available at the website:
1.2 Block diagram (fig.1)
Fig.1. The block diagram of the PSU.
1.3 Description of components PSU.
Table 1. Description of components and connectors module.
Element no
[Fig. 2]
Description
F1
÷F8
melting fuse
L1
÷L8
LED voltage indication at the outputs
AUX1 ÷ AUX8
independently protected outputs,
IN1-, IN2-
power supply inputs of the fuse module
*
Refer to chart 1